Hidrológiai Közlöny, 2017 (97. évfolyam)
2017 / 3. szám - MANAGING ENVIRONMENTAL RISKS - FLOOD PROTECTION EXPERIENCES AND COOPERATION IN THE DANUBE RIVER BASIN - Engi Zsuzsanna: Flood hazard modelling of the River Mura based on the silting up processes of the inundation area
92 Hidrológiai Közlöny (Hungarian Journal of Hydrology) 2017. 97. évf. 3. sz. The comparison of the forecasted bar locations by the The development of meanders was also studied model v6_0 with registered locations of bars on maps was where bank erosion occurred (Knighton 1998) (Figure also shown (Engi 2016) (Figure 13). 14). 2. experimental area Figure 13. Comparison of the forecasted bar locations by the model v6_0 with registered locations of bars on maps Figure 14. Development of meanders during the simulation offlood wave Q500 SLOW Morphometric parameters for long-term development Morphometric parameters for the long-term development of the river were analysed on the basis of digitalized paths of the river at different times (1785, 1860, 1880, 1920, 1976, 2002 and 2014). The long-term changes could be observed by comparing the values. In the past, the effects of river training or regulation works were evident in the short term. The effects of climate change will only appear in the long run, but if we identify the changes in the morphometric parameters of the river network we will be able to forecast the potential flood hazard in the future. The database contains seven vectorised river paths of the studied Mura section (Figure 15) and 535 meanders (Brice 1983, Hooke and Harvey 1983, Rosgen 1994, Hooke 1997, 2006, 2207a and 2007b, Gregory and Walling 1973 in Tímár and Telbisz 2005) in different developing stages (Laczay 1982). On the basis of the river-training works, the anthropogenic sections of the river were separated (Engi et al. 2012, Engi 2016, Engi et at. 2016a). The morphometric parameters of different times were studied and compared (Table 3): the central line and the width of the river, amplitudes of meanders, the length of the bend, etc. (Engi 2016). Using these parameters, conclusions were drawn about the development of meanders (Engi 2016, Engi et al. 2016a) (Figure 16). Figure 15. Comparing the historical paths of the Mura River in different periods in the river section 0+000 km - 48+472 km Short and long-term methods were also compared (Figure 17). The lateral movement of meanders was evaluated (Engi, 2016).
